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Heart|Lab Grown|IGI

1.21ct F VS1 Heart Lab Grown Diamond

ID • F/VS1 • IGI LG673419604

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG673419604

Diamond specifications and retailer prices

From $958 NZD
$539 USD
As of November 2, 2026
Save $482 NZD (33%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,440 NZD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.21ct lab-grown heart diamond

This 1.21ct lab-grown heart sits in the classic one-carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG673419604 or 673419604. Listed at 2 retailers as of November 2, 2026, with prices from $958 to $1,440, a $482 spread on the same certified stone. Brilliant Earth lists it at $1,440. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG673419604
Dimensions6.58 × 7.30 × 4.38 mm
L/W Ratio1.11
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.58 mm7.30 mm1.21 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG673419604
Side View
Table 60.0%Crown 35.9°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 60.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $1,440 NZD|Low: $450 NZD|High: $3,875 NZD|Avg: $1,435 NZD|-40.4%
Brilliant Earth
Retailer 2
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Retailer 5
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Retailer 7
Retailer 8
Retailer 9
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Retailer 13
September 23, 2026
Retailer 6$452 NZD
Retailer 8$533 NZD
Retailer 4$637 NZD
Retailer 13$793 NZD
Retailer 9$844 NZD
Retailer 2$958 NZD
Retailer 7$1,075 NZD
Retailer 12$1,255 NZD
Brilliant Earth$1,440 NZD
Retailer 3$1,773 NZD
Retailer 11$1,850 NZD
Retailer 10$2,099 NZD
Retailer 5$3,590 NZD

39 data points across 13 retailers

2 retailers$958 NZD to $1,440 NZD

B+
Cheapest Retailer
-
$958 NZD
$539 USD
Most Expensive
B
Brilliant Earth
15257862Y · Nov 2
$1,440 NZD
$810 USD
View
1 more retailer has this diamond
Prices start from $958 NZDSave up to $482 NZD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
1.21ct Heart
$958 NZD